Question: What was the start and finish time of the Boeing 747 which was operated by Air Algerie?
Paraphrase: What was once the start and finish time of the Boeing 747 which was operated by means of Air Algerie?
SPARQL (Wikidata): SELECT ?value1 ?value2 WHERE { wd:Q179 p:P137 ?s . ?s ps:P137 wd:Q406764 . ?s pq:P582 ?value1 . ?s pq:P580 ?value2 }